Improvement in stove-pipe expanders and contractors



H. IMHOP. Stove-Pipe Expander and Uontraotor.

No.198,'8 86. Patented Jan. 1,1878.

M. PETERS, FHDTO-LITHDGRAPHER. WA5HINGTON. D c.

UNITED STATES PATENT ()FFIGE.

HENRY IMHOF, or LOOKPORT, NEW YORK.

IMPROVEMENT IN STOVE-PIPE EXPANDERS AND CONTRACTORS.

Specification forming part of Letters Patent No. 198,886, dated January1, 1878 application filed November 17, 1877.

struction and operation of the same, reference being had to the annexeddrawings, making a part of this specification, and to the letters andfigures of reference marked thereon.

My invention relates to expanding and contracting stove-pipes; and itconsists in a hollow truncated cone, one end of which is used forexpanding and the other end for contracting stove-pipes, as will behereinafter more fully set forth. a

The annexed drawing, to which reference is made, fully illustrates myinvention.

Figure 1 of the drawings is a perspective view of my stove-pipeexpanding and contracting device. Fig. 2 is a sectional view of thesame, showing its application for contracting one end of a stove-pipe.Fig. 3 is an external view of the same, showing its application forexpanding the end of a stove-pipe.

A represents a hollow truncated cone, of any suitable dimensions, andmade of sheet metal or other material that will an wer the purpose forwhich it is intended.

This device is used for expanding and contracting the ends ofstove-pipes in the follow ing manner: The smaller end of the cone isinserted in the end of the stove-pipe, and forced into the same,whereby, of course, the stovepipe may be more or less expanded at thatpoint, as re'quired. For contracting the end of the stove-pipe it isinserted in the larger end of the cone, and the cone forced over thesame, which contracts the pipe sufficiently to fit in another pipe.

It is evident that if the implement were not truncated it would beadapted for use in the same manner.

The invention is simple, cheap, and admirably adapted to be used inputting up stovepipe where the sections of pipe do not fit.

What I claim as new, and desire to secure by Letters Patent, isa Aconical implement, A, for the purpose of contracting and expanding theends of stovepipes, substantially in the manner as hereinbefore setforth.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

HENRY IMHOF. Witnesses:

DANL. WILLARD, REUBEN OARRoLL'.

